Denver became the third Colorado county to announce this week that it will no longer hold prisoners for federal immigration authorities solely on the basis of immigration status.

Sheriff Gary Wilson made the announcement Wednesday, following the lead of sheriffs in Boulder and San Miguel Counties that have also decided it will stop honoring detainer orders issued by Immigration and Customs Enforcement, or “ICE.”

The move to refuse federal immigration holds follows rulings that a county sheriff’s department is potentially liable for a Fourth Amendment violation if it holds someone in custody solely on the basis of an immigration detainer.